\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{circuitikz}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes,}
\ctikzset{bipoles/length=1cm}
\begin{document}
\small
\begin{circuitikz}[>=latex, scale=1,european]
  % \useasboundingbox(0.9,0)rectangle(5.1,5);
  %\draw (0,3)--(6,3) to[lamp] (6,0)--(0,0) to [battery](0,3);
  \draw (0,0)--(6,0) to [lamp] (6,2)--(0,2) to [battery](0,0);
  \draw (1.5,0) to [rmeter,t=V, *-*] (1.5,2);
  \draw (4,0) to [lamp, *-*] (4,2);
  \draw (5,0) to [lamp, *-*] (5,2);
\end{circuitikz}
\end{document}